penta: use io.File.exists to check for local rc.
penta: use io.File.exists to check for local rc.

((not only) Workaround bug where source! is not silent anymore)

scorpiovn/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,blueyed/dotfiles,blueyed/dotfiles,blueyed/dotfiles,blueyed/dotfiles,blueyed/dotfiles,scorpiovn/dotfiles